so if i open a new tab the "access denied message don't pop".
My probleme is when i want to test my whitelist sometimes the Access denied page shows off sometimes i have just a white page. If i wana go too google it says Acces denied btu if i want to go to youtube i have just a white page.
here is my configuration file :

Actually i am using both about:blank+newtab just in case . No problem ! i am happy to help "even if its a micro help" on this wonderful solution !
It's ok for the youtube blank page The iptable is doing hes job so far by blocking the youtube with the blank page.

Do i mark solved ? or something else ?

Thank you Fanth for your support and help.

If you give a man a fish, he eats for a day. Teach him how to fish and he will eat forever...